This duelist in the Yu-Gi-Oh! Duel Monsters anime was known for summoning his zombie monsters and using Call Of The Haunted to bring them back, until Joey was able to exploit their 0 DEF and defeat him
Bonz
Judge! My opponent used relay soul to summon back a monster and didn't lose the game despite the monster hitting the graveyard after using it for this extra deck summoning type
This structure deck was a retrain of an older structure that duelists loved but wasn't very good. The new one, however, proved to be very meta as it slotted easily into snake-eye strategies
Structure Deck: Fire Kings
This machine based fusion and xyz strategy originated in gx as their most notable monster has become an icon for ending goat format
Cyber Dragons
This powerful monster used by Yugi with a high attack for a single tribute monster and this handtrap staple in Genesys format
Summoned Skull Meister
The GX character "Belowski" is known for his very chill vibes and using this monster in duels in order to attack for 3000 damage and constantly summon new monsters at the end of the turn when one gets destroyed by battle
Mokey Mokey
This removed mechanic of yugioh gave the turn player the ability to active ignition effects of monsters on summon of a monster before opponent's could respond
Monster Priority
The machine reator structure deck came out with support for ancient gears, but also came out with support for this type and was considered one of the best structure decks ever released
Dinosaurs/ Structure Deck: Dinosmasher's Fury

This Fire synchro strategy known for its low rarity core has been giving a generally hated reputation for it's ability to get over 16K damage and otk through pot of prosperity
Tenpai/Sangen/Sangenpai
This powerful rank 5 monster that could be ranked up on Utopia and could get to 5000 ATK in a single battle plus this board breaker spell with one of two possible effects
Number S39: Utopia the Lightning Storm
This archetype in Arc-V was mostly used by the Obelisk Force. Despite the most common play being to normal summon a monster and burn for 800, in TCG it's played as a go second deck
Ancient gear
This card was commonly used to declare a card name and look at the opponent's hand despite the text not specifiying that you could look at their hand. This was changed with a rules update around 2019
Mind Crush
This structure deck was centered around a character from Yu-Gi-Oh! Vrains and his archetype, but most people saught it out for the reprint of Ash Blossom & Joyous Spring
Structure Deck: Soulburner/Salamangreat
This go-second deck is based around a monster released in 2004 with a single line of text as its effect. It loves the different dimension
Gren Maju Da Eiza
This powerful boss monster for lightsworn that can non-once per turn pay 1000 life points and destroy all other cards on the field, plus this dragunity field spell that can send it to the grave
Judgment Dragon Ravine
This Zexal character and card was said to be the first being in existence. Once it became lonely, it made the rest of the Universe and eventually became a number
Numeron Dragon/ Number 100: Numeron Dragon
Before Master Rule 4 came out, this pre-errata card was the only card in the game that could put monsters in face-down attack position. Thank goodness we don't have to deal with it today
Darkness Approaches
This earth machine-based archetype had a structure deck that most people would consider a failure. The plan was to overlay their machines to potentially OTK, but didn't have nearly enough ways in the deck to accomplish this
Geargia Rampage
This go-second strategy is based entirely on resolving their field spell in order to swing for game. Generally also using kaijus, board breakers, and limiter removal in order for their four monsters to connect for game
Numerons
This level 2 monster searcher apart of a powerful 2 strategy that can special summon itself from the hand plus this level 4 spellcaster monster that can search a piece of exodia when it's sent from field to the graveyard
Spright Blue Dragon Summoner
Cal Kolter is known as Playmaker's/Yusaku Fujiki friend, runs a food truck selling hotdogs and is generally the base of operations for Yusaku. He is also known for this code related deck
Code Breakers
Aside from Unsupporting Conduct-Cheating, this penalty is the only other penalty in the policy documents that can get a duelist disqualified from a tournament
Unsupporting Conduct-Severe
This structure deck was acquired from a box set, which contained a "Power-up Pack", sleeves, a game mat, a storage box, and the structure deck. The cards in the box set were also their own special rarity
Noble Knights of the Round Table Box Set 
This famous and old OTK strategy is based around equip spells and buffing one of two monsters, Mataza the zapper or this monster in order to swing for game with a ridiculous amount of damage
Armed Samurai - Ben Kei
This fairly new spell card that can potentially add three monsters to your hand or send three monsters to the graveyard after comparing attack with your opponent, plus this older card known for ending battle phases and summoning itself from hand
Subspace Battle Fader